DIAM List of Products and Services

Diamond films possess exceptionally excellent properties in terms of hardness, chemical stability, and thermal conductivity. Therefore, they demonstrate very high durability even in plasma environments. By coating components of plasma etching equipment and deposition devices, especially the parts that are directly exposed to plasma, with diamond films, the lifespan of the components can be significantly extended. They show particular resistance to fluorine-based, chlorine-based, and hydrogen gases.

• Etching Equipment

Diamond is the hardest material on Earth, and by coating molds with its overwhelming durability, it brings innovation to the manufacturing process. Molds coated with diamond films become significantly more resistant to wear and scratches, greatly extending their lifespan. This leads to a remarkable increase in production efficiency and a reduction in defective products, thereby improving product quality. As a result, it significantly contributes to overall cost reduction.

• Other molds

By doping diamond films deposited by the CVD method with boron, a new property of conductivity is added. This conductive diamond possesses ideal characteristics for sensors, including a wide potential window and extremely low background current, which are not found in conventional electrode materials. This unique property significantly accelerates the development of high-sensitivity and high-precision sensors. Furthermore, the inherent high durability of diamond against strong acids and strong alkalis allows sensors to function stably for extended periods even in harsh environments, greatly enhancing product reliability and lifespan. Conductive diamond is expected to be at the core of next-generation sensor technology, with applications anticipated across various fields.

• Other weight measuring instruments

We will introduce a case study on the application of conductive diamond technology for a recycling technique that dissolves the resin component of CFRP to extract carbon fibers. CFRP (carbon fiber reinforced plastic) is lightweight and has high strength, making it widely used in the manufacturing of aircraft and automobiles. While the demand for this material is expected to grow as it contributes to weight reduction and improved fuel efficiency, a significant number of products that have reached the end of their life cycle are currently disposed of in landfills, which poses a challenge. Several recycling technologies have already been proposed, but they have high energy and environmental burdens and are not yet sufficient recycling solutions. Electrolytic sulfuric acid technology can dissolve the resin component of CFRP with low energy consumption, achieving a recycling technique with low environmental impact.

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• Composite Materials

We would like to introduce a case study of conductive diamond technology that has realized an alternative to chromic acid used in the plating process of automotive parts. Car front grilles, door knobs, and other components are plated on resin, but resin does not conduct electricity and cannot undergo electroplating. Chromic acid is used to dissolve (etch) the resin, fix the catalytic metal, and perform the plating process. This technology uses a solution electrolyzed with a diamond electrode from a sulfuric acid solution, making it a clean and environmentally friendly alternative technology that does not involve toxicity or waste. Additionally, the sulfuric acid solution can be reused, reducing wastewater. [Case Overview] - Dissolves (etches) resin with chromic acid, fixes catalytic metal, and performs plating. - Expected as a clean and environmentally friendly alternative technology that does not use chromic acid. *For more details, please download the PDF or feel free to contact us.

• Other surface treatment equipment
• Plating Equipment
• Other Auto Parts

We would like to introduce a case study on the removal of photoresist in the semiconductor cleaning process using conductive diamond technology. The removal of photoresist is a process that is repeated more than several dozen times per wafer, and until now, it has required a large amount of SPM solution, with waste liquid treatment also being a challenge. The powerful oxidizing ability of electrolytic sulfuric acid can decompose photoresist into carbon dioxide and water, and the reduced sulfuric acid can be circulated and reused as peroxymonosulfuric acid. [Case Overview] ■ Issue: Large amounts of SPM solution required, waste liquid treatment is also a challenge ■ Effect - The powerful oxidizing ability of electrolytic sulfuric acid decomposes photoresist into carbon dioxide and water - The reduced sulfuric acid can be circulated and reused as peroxymonosulfuric acid *For more details, please download the PDF or feel free to contact us.

• Other semiconductors
• Other cleaning equipment
• Other surface treatment equipment

Conductive diamond technology for semiconductor cleaning and pretreatment for resin plating We would like to introduce a case study. Electrolytic sulfuric acid generated using diamond electrodes is expected to serve as an alternative technology to address issues such as toxicity and large amounts of waste that arise in manufacturing processes for semiconductors and automobiles. When sulfuric acid is electrolyzed using diamond electrodes with a wide potential window, it triggers a powerful oxidation reaction, allowing for the production of persulfate (electrolytic sulfuric acid). Diamonds have excellent resistance to acids and do not wear out even with strong electrolytic sulfuric acid. This technology is anticipated to be applied as an alternative method in the manufacturing processes of semiconductors and automobiles. [Case Overview] ■ Application: Semiconductor cleaning, pretreatment for resin plating ■ Technology: Electrolytic synthesis of peroxides (persulfate, perphosphate), organic synthesis, synthesis of useful substances from CO2 (formic acid, aldehydes) ■ Contribution: Environmentally friendly alternative technology *For more details, please download the PDF or feel free to contact us.*

• Other semiconductors
• Other cleaning equipment
• Other surface treatment equipment

We would like to introduce a case study on conductive diamond technology in clean technology. Organic electro-synthesis begins with the transfer of electrons at the electrodes, making it an inherently "clean technology" that does not produce waste. In Japan, discoloration of wastewater is not yet a major issue, but globally, environmental regulations are being strengthened in various countries, and color regulations for wastewater are advancing. In the future, there will be a greater demand for the reduction of BOD and COD, and diamond electrodes will contribute to the improvement of water quality in wastewater treatment. [Case Overview] - Environmental regulations are being strengthened globally, and color regulations for wastewater are advancing. - There will be a demand for greater reductions in BOD and COD, and diamond electrodes will contribute to the improvement of water quality in wastewater treatment. *For more details, please download the PDF or feel free to contact us.

• Other water treatment equipment
• Wastewater/wastewater treatment equipment

We would like to introduce a case study on the use of conductive diamond technology for the decomposition of difficult-to-degrade substances. Chelating agents and fluorinated surfactants found in industrial wastewater have posed challenges due to their resistance to biological treatment, but they can be decomposed using diamond electrodes. Additionally, by applying this technology to the removal and decomposition of nitrogen compounds (ammonia, nitrate) and plating wastewater, we contribute to the reduction of environmental impact in the treatment of organic wastewater, which has been challenging until now. 【Case Overview】 - Chelating agents and fluorinated surfactants found in industrial wastewater have posed challenges due to their resistance to biological treatment, but they can be decomposed using diamond electrodes. - By applying this technology to the treatment of organic wastewater, which has been challenging until now, we contribute to the reduction of environmental impact. *For more details, please download the PDF or feel free to contact us.

• Other water treatment equipment
• Wastewater/wastewater treatment equipment

Our company enables water treatment, wastewater treatment, and the decomposition of organic substances using direct electrolysis technology with conductive diamond electrodes. Wastewater contains many types of pollutants, including persistent substances such as low-biodegradability toxic materials and residual pharmaceuticals, which are often generated and accumulated during manufacturing processes and commercial use. We contribute to decolorization, COD and BOD reduction, and the decomposition of refractory substances and organic materials. [Case Overview] ■ Application: Water treatment, wastewater treatment, decomposition of organic substances ■ Technology: Direct electrolysis ■ Contribution: Decolorization, COD and BOD reduction, decomposition of refractory substances and organic materials *For more details, please download the PDF or feel free to contact us.

• Other water treatment equipment
• Wastewater/wastewater treatment equipment

We would like to introduce case studies on the use of conductive diamond technology for easy and safe disinfection and sterilization in daily life. Ozone units utilizing diamond electrodes allow for disinfection handwashing, sterilization of vegetables, and cleaning simply by rinsing, making them suitable for kitchen and bathroom use, as well as for deodorizing toilets in a compact and convenient manner. Additionally, the application of ozone water can be expanded for use in space. 【Case Overview】 - Disinfection handwashing, sterilization of vegetables, and cleaning simply by rinsing, suitable for kitchen and bathroom use, as well as deodorizing toilets in a compact and convenient manner. - Possibility to expand the use of ozone water for applications in space. *For more details, please download the PDF or feel free to contact us.

• Ozone Sterilizer
• Electrolyzed water sterilizer

We would like to introduce a case study on a compact and simple device utilizing conductive diamond technology for high-concentration ozone water. Ozone water is generally a solution in which ozone gas is generated and dissolved in water using a special method. There were limitations in its use, as large equipment was required to dissolve ozone gas in water, but diamond electrodes can generate ozone by directly electrolyzing water, allowing for a compact and simplified unit. Due to its high generation efficiency, it is also possible to convert flowing water into ozone water. [Case Overview] - Diamond electrodes can generate ozone by directly electrolyzing water, enabling a compact and simplified unit. - Due to its high generation efficiency, it is also possible to convert flowing water into ozone water. *For more details, please download the PDF or feel free to contact us.

• Ozone Sterilizer
• Electrolyzed water sterilizer

Our company generates high-concentration ozone water using conductive diamond technology to maintain sterilization, disinfection, and a hygienic environment. Ozone has a very strong oxidizing power, approximately seven times that of chlorine, second only to fluorine in nature. This powerful oxidation effect can be utilized for sterilization, deodorization, and bleaching, and is used in various facilities around the world, including medical institutions, food factories, and daycare centers, for sterilization and infection control. 【Case Overview】 ■ Application: Sterilization, disinfection, maintenance of a hygienic environment ■ Technology: Generation of ozone water ■ Contribution: Decontamination/Sterilization/Deodorization *For more details, please download the PDF or feel free to contact us.

• Ozone Sterilizer
• Electrolyzed water sterilizer

This is a device that generates electrolytic sulfuric acid by placing a sulfuric acid solution in a beaker and circulating it. Since conductive diamond electrodes are used in the electrolytic cell, it can stably produce electrolytic sulfuric acid for an extended period. Electrolytic sulfuric acid can be used for cleaning purposes, dissolving organic materials, and testing anodic oxidation of aluminum, among other applications.

• Other surface treatment equipment

We offer coating services (contract film formation) for conductive diamond and diamond films. Diamonds are typically insulators, but by doping with boron, conductivity can be imparted while retaining the chemical stability and strength of diamonds, making them suitable for various applications. Additionally, due to their wide potential window, they can preferentially facilitate oxidation or reduction reactions of substances that are usually difficult to electrolyze, enabling the decomposition or synthesis of materials that were challenging with conventional methods. Electrolytic Sulfuric Acid When sulfuric acid is electrolyzed using diamond electrodes with a wide potential window, it can trigger a powerful oxidation reaction, producing persulfate (electrolytic sulfuric acid). Diamonds exhibit excellent resistance to acids and do not wear out even with strong electrolytic sulfuric acid. This technology is expected to be applied as an alternative method in semiconductor and automotive manufacturing processes. [Application Range] ■ Electrolytic synthesis ■ Electrolysis ■ Sensors *For more details, please download the PDF or feel free to contact us.

• Other electronic parts
• Processing Contract

We offer conductive diamond coating services. Diamond is typically an insulator, but by doping it with boron, conductivity can be imparted while retaining the chemical stability, strength, and other characteristics of diamond, making it suitable for various applications. Additionally, due to its wide potential window, it can preferentially facilitate oxidation or reduction reactions of substances that are usually difficult to electrolyze, enabling the decomposition and synthesis of materials that were challenging with conventional methods. 【Application Range】 ■ Electrolytic synthesis ■ Electrolysis ■ Sensors *For more details, please download the PDF or feel free to contact us.

• Other electronic parts
• Processing Contract

Our company offers a carbon fiber separation technology from waste CFRP using the electrolytic sulfuric acid method. The electrolytic sulfuric acid method utilizes conductive diamond as an electrode to electrolyze sulfuric acid, producing three types of active oxidizing agent solutions: peroxodisulfuric acid, peroxomonosulfuric acid, and hydrogen peroxide. This method dissolves the resin component of CFRP to separate the carbon fibers. Since electrolytic sulfuric acid does not contain heavy metals, it does not violate environmental regulations and is considered a particularly strong oxidizing agent that can be used safely in industrial applications. Moreover, sulfuric acid can be recycled, posing no issues related to waste disposal, making it an environmentally friendly treatment method. 【Features】 ■ Recyclable sulfuric acid solution ■ Ability to obtain regenerated carbon fibers with minimal strength reduction ■ Capability to obtain relatively long regenerated carbon fibers *For more details, please download the PDF or feel free to contact us.

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"What is a diamond electrode?" "I would like to conduct experiments using a diamond electrode." To respond to such requests, we have started selling standard diamond electrodes. We have prepared four different sizes of diamond electrodes, which are available for immediate delivery.

• Other electronic parts

This is an electrolysis cell for ozone generation through the electrolysis of water. By sandwiching a solid electrolyte membrane between a diamond electrode (boron-doped diamond, BDD) and the cathode, pure water and low-conductivity tap water can be efficiently electrolyzed to produce ozonated water.

• Other electronic parts

We offer an electrolysis cell designed to facilitate easy testing of electrochemical synthesis. We use boron-doped diamond (BDD) with a wide potential window as the anode, which is characterized by its ability to generate peroxides and its high chemical resistance. In the D series, BDD is used only as the anode. In the TD series, BDD electrodes are used for both the anode and cathode, allowing us to leverage the chemical resistance features and enabling polarity reversal, which makes it easy to remove electrode deposits (such as scale). 【Product Lineup】 ■ TD-1040 (Electrode size [exposed part]: 10×40mm) ■ TD-2040 (Electrode size [exposed part]: 20×40mm) ■ D-1040 (Electrode size [exposed part]: 10×40mm) ■ D-2040 (Electrode size [exposed part]: 20×40mm) *For more details, please download the PDF or feel free to contact us.

• Other electronic parts