| Method of producing high-density powder nitrogen-containing material based on iron | |
| 2024-04-24 | |
| 专利权人 | DOROFEEV V YU (DORO-Individual) ; SVIRIDOVA A N (SVIR-Individual) |
| 申请日期 | 2024-04-24 |
| 专利号 | RU2832993-C1 |
| 成果简介 | NOVELTY - Invention relates to powder metallurgy, particularly, to production of high-density powder nitrogen-containing material based on iron. Charge is prepared containing sprayed powder of chromium- and/or molybdenum-containing steel, graphite and iron nitride in amount corresponding to content of 0.6 wt.% of nitrogen. Static cold pressing is performed at pressure providing porosity of 10-12%. Additional compaction is carried out in two stages: at the first stage – heating in ammonia medium to temperature of 590-730 °C and compaction to relative density of 0.95-0.97, at the second stage – high-temperature heating and compaction to relative density of not less than 0.985. After the first stage of additional compaction, annealing is carried out in two stages: at the first stage the workpiece is heated to 900-950 °C for 1-2 hours, and at the second stage the temperature is increased to 1,100-1,200 °C and held for 4-6 hours. USE - Powder metallurgy. ADVANTAGE - Improved quality of interparticle splicing, increased impact viscosity, strength and endurance. 1 cl, 1 tbl, 1 ex |
| IPC 分类号 | B22F-003/16 ; B22F-003/24 ; C22C-033/02 |
| 国家 | 俄罗斯 |
| 专业领域 | 材料科学 |
| 语种 | 英语 |
| 成果类型 | 专利 |
| 文献类型 | 科技成果 |
| 条目标识符 | http://119.78.100.226:8889/handle/3KE4DYBR/17021 |
| 专题 | 中国科学院新疆生态与地理研究所 |
| 作者单位 | 1.DOROFEEV V YU (DORO-Individual) 2.SVIRIDOVA A N (SVIR-Individual) |
| 推荐引用方式 GB/T 7714 | DOROFEEV V YU,SVIRIDOVA A N. Method of producing high-density powder nitrogen-containing material based on iron. RU2832993-C1[P]. 2024. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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