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"Although the temperature can be achieved, the targeted reaction site cannot be created." We will overcome that barrier with a small carbon furnace. In this series, we will explain the capabilities of a small carbon furnace that can reproducibly handle extremely low oxygen atmospheres (O2 ppm level) and ultra-high temperatures (2,000-3,000°C range) from a practical perspective. Do you face these challenges? ■ Heating can be done, but slight oxygen contamination causes variations in properties ■ Large furnaces have slow ramp-up times, making it difficult to establish conditions ■ Temperature unevenness and undercooking lead to instability in crystallinity and pore structure Benefits of miniaturization × extremely low O2 × ultra-high temperature ■ Reach target temperatures quickly → increases the number of trials per day ■ Ensures uniform heating even with small samples → improved reproducibility ■ Balances oxygen management and thermal history → achieves desired crystalline phases, conductivity, and microstructure In this series, we will sequentially introduce the development background, heating principles, application-specific know-how, safety design, specifications & expansions, mini case studies, and FAQs. *For more detailed information, please download the materials or feel free to contact us.

While the demand for dry reduction heat treatment is increasing, the following challenges are prominent on-site. ■ Challenges in Research Environments - Limitations on maximum achievable temperature (recipe design is constrained by material and structural upper limits in tubular furnaces) - Limitations on sample preparation volume (effective heating area is narrow, making it unsuitable for scale considerations) - Difficulty in maintaining extremely low oxygen levels (ppm to ppb range) (due to leaks, residual O2, and fine cracks from heat shock, etc.) ■ Directions for Solutions (Required Specifications) - Uniform heating in a short time: rapid temperature rise, high temperature uniformity, and good response - Flexible scaling: continuous support from small sample sizes to small-scale mass production - Atmosphere control: stabilization of extremely low oxygen levels with Ar/N2 (with small amounts of H2 as needed) and low residual O2 design ■ Concept Graphite heating element × high insulation structure × low leak design. A compact carbon furnace optimized for prototyping and condition setting, enabling faster and more reproducible dry reduction processes. *For more detailed information, please download the materials or feel free to contact us.

The small carbon furnace is characterized by its ability to maintain an extremely low oxygen environment and ultra-high temperatures (around 3000°C). In this explanation, we will simply clarify "why this is possible" from a fundamental perspective. 1) Why does it become "extremely low oxygen"? ■ The furnace material itself is an "oxygen getter." The hot zone of the furnace is composed of carbon (graphite). Residual O2/CO2/H2O reacts with carbon and is reduced and fixed as CO/CO2, effectively lowering the oxygen activity. As a result, even materials that are sensitive to oxidation can be processed in a mild atmosphere. ■ Built-in vacuum system + replacement Before heating, the system is evacuated, and by repeatedly purging with inert gas (such as Ar/N2), the air inside the sample can be expelled in advance. This is effective for gas replacement in pores and powder gaps that cannot be reached by simple "ventilation." 2) Why is "3000°C" possible? ■ Heating element = high-temperature stability of graphite Graphite exhibits extremely high heat resistance under inert atmospheres and vacuum, allowing for efficient heating of the hot zone through resistance heating. *For more detailed information, please download the materials or feel free to contact us.

In the previous session, we introduced the "principle" of the small carbon furnace. This time, we will discuss the actual applications and how it can be applied in research and development. ■ Main Application Examples 1. Synthesis and Sintering of High-Temperature Materials (up to 3000°C) Thanks to the extremely low oxygen environment unique to carbon furnaces, it is possible to sinter high melting point materials such as carbides and nitrides without oxidation. 2. High Crystallization of Carbon-Based Materials Suitable for the high crystallization of materials like graphite and carbon nanotubes. 3. High-Temperature Treatment and Reduction Reactions of Metal Materials Metal oxides can be reduced under low oxygen conditions, allowing for control of microstructure and phases. 4. Evaluation of High-Temperature Gas Reactions Interactions with reactive gases and material stability can be verified in various atmospheres such as N2, H2, and Ar. 5. Material Process Evaluation at Research and Development and Prototype Scale Used for R&D purposes to optimize conditions in a short time. In the future, we are considering applications for the development of new materials utilizing more precise control of oxygen partial pressure. Next time, we will provide a detailed introduction to the "specifications." *For more detailed information, please download the materials or feel free to contact us.

In the previous session, we introduced the applications of a small carbon furnace. This time, we will present the actual specifications and configuration of the device. This device is designed as a compact type for research and development, allowing installation even in limited spaces. It supports heating in a vacuum and inert gas (Ar, N2) atmosphere, achieving a stable heating environment that suppresses oxidation. This specification serves as an example of the specs for a small research device. The device size can also accommodate larger models. 【Main Specifications】 ■ External dimensions: 1000W × 1000D × 2100H mm ■ Effective internal dimensions: 200W × 200D × 200H mm ■ Supported atmosphere: Inert gas (Ar, N2) and vacuum ■ Internal material: Graphite ■ Door structure: Front-opening type ■ Vacuum pump: Rotary pump ■ Recording and monitoring: Temperature, flow rate, pressure, etc. 【Safety Devices】 ■ Over-temperature prevention ■ Cooling water level detection, etc. *For more detailed information, please download the materials or feel free to contact us.

We will introduce why our small carbon furnace can achieve low oxygen and ultra-high temperatures. The carbon furnace material reacts with residual oxygen, featuring a design and manufacturing know-how that ensures it does not "leak." It removes air from inside the powder using a vacuum pump and replacement method. With a high emissivity graphite heater, a uniform heating hot zone, and high insulation, it efficiently heats while avoiding local overheating, making it possible to stably reach temperatures up to 3000°C. 【Features of the Small Carbon Furnace】 ■ Capable of reaching temperatures up to 3000°C: Quickly achieves ultra-high temperatures through the radiant heat of the graphite heater. ■ Easy to sinter in low oxygen: The carbon inside the furnace reacts with residual O2. ■ Air inside the powder is also replaced: Reduces O2 between particles through repeated vacuum and inert gas cycles. ■ Suppresses temperature variation: Reduces differences in the center, edges, and thickness direction with a "uniform heating zone" that warms evenly. *For more detailed information, please download the materials or feel free to contact us.

The "carbon furnace" is a super high-temperature heating furnace composed entirely of graphite (carbon) for the heater, insulation, and furnace walls. It is capable of heating in the high-temperature range of around 3000°C, which is difficult to achieve with conventional electric furnaces, while also keeping the oxygen concentration inside the furnace to an extremely low level. It is suitable for processes that require high crystallization of carbon materials and sintering of ultra-high melting point metals, where high temperature and low oxygen are essential. 【Features】 ■ Super high-temperature capability ■ Low oxygen atmosphere ■ Suitable for high crystallization treatment ■ Compatible with a wide range of materials *For more detailed information, please download the materials or feel free to contact us.

Our "Carbon Furnace" enables precise high-temperature phase transition, crystallization, and sintering through "ultra-low oxygen × 3000℃ class × vacuum replacement." It can be used in processes such as promoting phase transition and recrystallization, controlling grain growth (phase stabilization at high temperatures), densification sintering of ceramics and difficult-to-sinter materials, and energy control of surfaces and interfaces (surface stabilization under low oxygen conditions). It is suitable for developing temperature recipes from research to small-scale production. 【Reasons Why Our Carbon Furnace is Effective (Partial)】 ■ Creates ultra-low oxygen partial pressure - Vacuum pumping → Ar/N2 replacement (dilute H2 as needed*) to gradually lower the oxygen potential * H2 is operated within the safety design range of the equipment (e.g., below 4%) - The carbon material in the furnace absorbs residual O2 through getter action, suppressing side reactions ■ High-temperature stability at 3000℃ - Regular use up to 2800℃ / maximum up to 3000℃, with gradual temperature rise and hold for precise control of phase transition, crystallization, and sintering *For more detailed information, please download the materials or feel free to contact us.

In the aerospace industry, high levels of safety and reliability are required, making the quality of heat-resistant components crucial. To withstand high-temperature environments, precise temperature management during the firing process and environmental control to maximize material properties are essential. Carbon furnaces optimize the sintering, phase transitions, and energy control of surfaces and interfaces of heat-resistant components through ultra-low oxygen environments and high-temperature control at around 3000°C, enabling the production of high-quality products. 【Application Scenarios】 - Sintering of turbine blades for aerospace engines - Firing of rocket nozzle materials - Firing of heat-resistant coatings 【Effects of Implementation】 - Improved strength and durability of heat-resistant components - Enhanced performance through microstructure control of materials - Increased reproducibility of the manufacturing process

In research institutions engaged in new material development, precise temperature management and atmosphere control are required to maximize the properties of materials. Particularly in processes such as high-temperature phase transitions, crystallization, and sintering, oxygen concentration significantly affects the quality of the materials. Processing under inappropriate conditions may lead to undesired properties or degradation of the materials. Our carbon furnace achieves "ultra-low oxygen × 3000℃ class × vacuum replacement," enabling highly reproducible high-temperature treatments. 【Application Scenarios】 - Fundamental research on new materials - Evaluation of material properties - Small-batch production of diverse varieties 【Benefits of Implementation】 - Production of high-quality materials - Reduction of research and development time - Adaptability to a variety of materials

In the ceramics industry, increasing density is a crucial challenge to enhance product strength and durability. Particularly for ceramics used in high-temperature environments, a dense microstructure is required. Inadequate sintering can lead to a decline in product performance and potential damage. Our carbon furnace promotes the sintering of ceramics and enables densification through "ultra-low oxygen × 3000°C class × vacuum replacement." 【Application Scenarios】 - Sintering of ceramics - Promotion of phase transition and recrystallization - Control of grain growth 【Effects of Implementation】 - Improved product strength through densification - Production of high-quality products through precise temperature control - Support from research and development to small-scale production

In the powder metallurgy industry, especially in precision molding, the sintering process is crucial for maximizing the material's properties. The control of oxygen concentration and temperature during sintering significantly affects the product's strength and dimensional accuracy, potentially leading to defects and performance degradation. Our carbon furnace achieves a precise sintering process through an ultra-low oxygen environment and high-temperature control at around 3000°C. 【Application Scenarios】 - Sintering of parts requiring high precision shapes - Sintering of special alloys and ceramics - Research and development of new materials 【Benefits of Implementation】 - Generation of high-density and homogeneous sintered bodies - Improvement in product strength and durability - Increased yield