Selection of furnace for NH₃・nitriding atmosphere sintering | Corresponding to nitriding treatment and generated gas evaluation

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last updated：Jun 10, 2026

サーモニックENG

Organize the furnace configuration suitable for NH₃ supply, gas generation, and nitriding treatment.

Are you considering firing in an NH₃ and nitriding atmosphere, nitriding treatment, and evaluation of generated gases? In treatments in an NH₃ atmosphere, the appropriate furnace configuration and safety measures vary depending on whether NH₃ is supplied externally, whether gases such as NH₃ are generated during treatment, or whether you want to nitrify the material. In evaluating NH₃ supply and generated gases, it is important to consider specifications that include gas flow control, exhaust dilution, decontamination, leak management, purging, and backflow prevention. On the other hand, for nitriding treatment, multi-atmosphere furnaces or carbon furnaces are selected based on temperature range, atmosphere, sample quantity, and reactivity. This document organizes the objectives of NH₃ and nitriding atmosphere firing, furnace type selection, gas conditions, safety measures, and points for reflecting in equipment specifications. ■ For firing and reaction evaluation in an NH₃ atmosphere ■ For confirming nitriding treatment and compositional changes ■ For evaluating NH₃ generated gases and considering exhaust safety measures ■ For confirming the differentiation between multi-atmosphere furnaces and carbon furnaces ■ For firing tests and condition exploration before equipment installation

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basic information

Publication Content: Points for Selecting Furnaces for NH₃ and Nitrogen Atmosphere Sintering ■Objective We will organize the supply of NH₃, evaluation of NH₃ generation gas, nitriding treatment, and decomposition/reaction evaluation. ■Gas Conditions We will check NH₃ concentration, dilution gas, flow rate, switching procedures, and exhaust dilution. ■Temperature Range For low temperatures up to 1200°C, multi-atmosphere furnaces are used, while carbon furnaces are considered for high-temperature nitriding. ■Samples We will confirm the reactivity with powders, molded bodies, substrates, components, fixtures, and container materials. ■Safety Measures We will check for toxicity, odor, leak detection, exhaust treatment, purging, backflow prevention, and exhaust pathways. ■Equipment Development We will reflect the test conditions in gas systems, furnace dimensions, and exhaust safety design. Guidelines for Furnace Selection ■Multi-Atmosphere Furnace Suitable for NH₃ supply, gas generation evaluation, and nitriding/reaction evaluation at low temperatures up to 1200°C. ■Carbon Furnace Considered for high-temperature nitriding, high-temperature processing at around 2000°C, and high-temperature reaction evaluation in vacuum, inert, and reducing atmospheres.

Price information

Test content, furnace type, NH₃ concentration, and exhaust safety measures will be estimated each time.

Delivery Time

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※It varies depending on the type of furnace, temperature range, NH₃ concentration, sample amount, exhaust and removal measures, and gas line specifications.

Applications/Examples of results

■Firing, heat treatment, and reaction evaluation in an NH₃ atmosphere ■Confirmation of nitriding treatment, compositional changes, and reactivity ■Material evaluation under NH₃ supply ■Evaluation of NH₃ and decomposition gases generated during treatment ■Nitriding atmosphere treatment of powders, molded bodies, substrates, components, and jigs ■Exploration of conditions for NH₃ concentration, dilution gas, flow rate, and holding time ■Consideration of safety measures including toxicity, odor, leaks, exhaust dilution, and decontamination ■Firing tests using a multi-atmosphere furnace or carbon furnace ■Discussion of gas line, furnace dimensions, and exhaust safety design based on test results We are available for consultation from the early stages of consideration, such as "Can we evaluate by flowing NH₃?", "Which type of furnace is suitable for nitriding treatment of materials?", and "How should we consider exhaust safety measures for generated NH₃?"