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高速切削钛合金的硬质合金材料低温固相烧结技术研究
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作者 陈胜男 刘安虎 《中国金属通报》 2020年第7期100-101,共2页
由于传统的低温固相烧结技术,没有通过在硬质合金粉体中添加游离碳来消除脱碳相,因此导致制备出的硬质合金刀具材料硬度低。针对这一问题,进行高速车削钛合金的硬质合金刀具材料低温固相烧结技术研究。通过分析硬质合金刀具材料低温固... 由于传统的低温固相烧结技术,没有通过在硬质合金粉体中添加游离碳来消除脱碳相,因此导致制备出的硬质合金刀具材料硬度低。针对这一问题,进行高速车削钛合金的硬质合金刀具材料低温固相烧结技术研究。通过分析硬质合金刀具材料低温固相烧结机理,保证其致密化开始温度总是低于共晶温度;结合硬质合金刀具材料低温固相烧结的脱碳现象,采用尝试法在硬质合金粉体中添加游离碳来消除脱碳相。设计洛氏硬度试验,结果表明,设计的烧结技术制备的硬质合金刀具材料硬度最高可达1870HV3,实验对照组为1654HV3,设计的烧结技术制备的硬质合金刀具材料硬度更高,可以制备出高硬度的高速切削钛合金的硬质合金刀具材料。 展开更多
关键词 高速车削钛合金 硬质合金刀具材料 低温固相烧结技术 研究
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Low temperature solid-phase sintering of sintered metal fibrous media with high specific surface area 被引量:4
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作者 唐彪 汤勇 +3 位作者 周蕤 陆龙生 刘彬 屈修明 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第8期1755-1760,共6页
A procedure of low temperature solid-phase sintering(LTSS) was carried out to fabricate sintered metal fibrous media(SMFM) with high specific surface area.Stainless steel fibers which were produced by cutting proc... A procedure of low temperature solid-phase sintering(LTSS) was carried out to fabricate sintered metal fibrous media(SMFM) with high specific surface area.Stainless steel fibers which were produced by cutting process were first plated with a coarse copper coating layer by electroless plating process.A low-temperature sintering process was then completed at about 800 °C for 1 h under the protection of hydrogen atmosphere.The results show that a novel SMFM with complex surface morphology and high specific surface area(0.2 m2/g) can be obtained in this way.The effect of sintering temperature on the surface morphology and specific surface area of SMFM was studied by means of scanning electron microscopy and Brunauer-Emmett-Teller.The damage of micro-structure during the sintering process mainly contributed to the loss of specific surface area of SMFM and the optimal sintering temperature was 800 °C. 展开更多
关键词 sintered metal fibrous media low temperature solid-phase sintering electroless copper plating surface morphology specific surface area
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