CN111705240A - 一种耐磨刀具用石墨烯增强钴基复合材料的制备方法 - Google Patents
一种耐磨刀具用石墨烯增强钴基复合材料的制备方法 Download PDFInfo
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Abstract
本发明涉及一种耐磨刀具用石墨烯增强钴基复合材料的制备方法。石墨烯增强钴基复合材料以高纯电解钴片为基体,以氧化石墨烯、钨、铬、硅、锰、铁等粉体颗粒为增强相,所述制备方法将高纯电解钴片通过高能行星球磨方式制备得到高纯钴粉体,与增强体以适当配比在真空热压炉中,保温保压,将粉体一步到位制成坯料,减少工艺步骤,缩短了生产周期,且工艺流程简单,工艺参数稳定,节约了成本;石墨烯增强钴基复合材料质量优越,耐磨性和切削性能好,高温力学性能优越,是理想的耐磨刀具、切削刀具及其他耐磨部件用合金材料。
Description
技术领域
本发明涉及复合材料技术领域,具体为一种耐磨刀具用石墨烯增强钴基复合材料的制备方法。
背景技术
钴基合金是一种具有良好的力学性能、耐腐蚀性能和耐磨损性能以及耐高温氧化的高温耐磨合金,石墨烯是一种由碳原子构成的二维纳米材料,由于其独特的二维蜂窝晶体结构和极高的键强度,石墨烯是目前已知的世界上比强度最高、最坚硬的材料,石墨烯的杨氏模量约为1100GPa,断裂强度约为130GPa,分别是最好的超高强度钢的6倍和60多倍,此外石墨烯还具有高阻隔和屏蔽的特性,是一种优异的防腐材料。现有的制备方法和工艺流程成本较高且步骤繁琐,钴基复合材料强度、耐磨性及耐蚀性不足,需要对现有技术进行提升和改进。
发明内容
鉴于现有技术中所存在的问题,本发明公开了一种耐磨刀具用石墨烯增强钴基复合材料的制备方法,其步骤如下:
步骤一:称量预定比例的配料进行混合;
步骤二:将混合后的所述配料进行真空、热压和保温处理得到坯料;
步骤三:将所述坯料进行时效处理、铣面和清洗。
作为本发明的一种优选方案,步骤一中所述配料为高纯电解钴片、石墨烯、钨、铬、硅、锰、铁,将所述配料放入行星球磨机中,通入液氮进行球磨混合,所述石墨烯的含量为以铝基体的质量为基数的1.0wt%~1.5wt%;所述钨、铬、硅、锰成分的含量,均以所述铝基体的质量为基数,分别为:钨为3.0~6.0wt%,铬为25.0~32.0wt%,硅为0.5~1.1wt%,锰为0.2~0.8wt%。
作为本发明的一种优选方案,步骤二中所述配料需放入高强石墨模具中,再将所述高强石墨模具置于真空热压炉中,先抽真空至10-3Pa,再以5~10℃/分钟的升温速率升至1050℃~1180℃,随后在保温状态下,以40MPa的压力进行压制,保温保压6-12小时,得到石墨烯增强钴基复合材料坯料。
作为本发明的一种优选方案,步骤三中将所述坯料放入真空退火炉,在900℃条件下时效处理2小时,随炉冷却后取出,将所述坯料进行铣面和清洗。
本发明的有益效果:本发明中石墨烯增强钴基复合材料以高纯电解钴片为基体,以氧化石墨烯、钨、铬、硅、锰、铁等粉体颗粒为增强相,所述制备方法将高纯电解钴片通过高能行星球磨方式制备得到高纯钴粉体,与增强体以适当配比在真空热压炉中,保温保压,将粉体一步到位制成坯料,减少工艺步骤,缩短了生产周期,且工艺流程简单,工艺参数稳定,节约了成本;石墨烯增强钴基复合材料质量优越,耐磨性和切削性能好,高温力学性能优越,是理想的耐磨刀具、切削刀具及其他耐磨部件用合金材料。
附图说明
图1为本发明的工艺流程示意图。
具体实施方式
实施例1
如图1所示,本发明所述的一种耐磨刀具用石墨烯增强钴基复合材料的制备方法,其步骤如下:
步骤一:称量预定比例的配料进行混合;
步骤二:将混合后的所述配料进行真空、热压和保温处理得到坯料;
步骤三:将所述坯料进行时效处理、铣面和清洗。
步骤一中所述配料为高纯电解钴片、石墨烯、钨、铬、硅、锰、铁,将所述配料放入行星球磨机中,通入液氮进行球磨混合,所述石墨烯的含量为以铝基体的质量为基数的1.0wt%;所述钨、铬、硅、锰成分的含量,均以所述铝基体的质量为基数,分别为:钨为3.0wt%,铬为25.0wt%,硅为0.5wt%,锰为0.2wt%。
步骤二中所述配料需放入高强石墨模具中,再将所述高强石墨模具置于真空热压炉中,先抽真空至10Pa,再以5℃/分钟的升温速率升至1050℃,随后在保温状态下,以40MPa的压力进行压制,保温保压6小时,得到石墨烯增强钴基复合材料坯料。
步骤三中将所述坯料放入真空退火炉,在900℃条件下时效处理2小时,随炉冷却后取出,将所述坯料进行铣面和清洗。
实施例2
如图1所示,本发明所述的一种耐磨刀具用石墨烯增强钴基复合材料的制备方法,其步骤如下:
步骤一:称量预定比例的配料进行混合;
步骤二:将混合后的所述配料进行真空、热压和保温处理得到坯料;
步骤三:将所述坯料进行时效处理、铣面和清洗。
步骤一中所述配料为高纯电解钴片、石墨烯、钨、铬、硅、锰、铁,将所述配料放入行星球磨机中,通入液氮进行球磨混合,所述石墨烯的含量为以铝基体的质量为基数的1.25wt%;所述钨、铬、硅、锰成分的含量,均以所述铝基体的质量为基数,分别为:钨为4.5wt%,铬为28.5wt%,硅为0.8wt%,锰为0.5wt%。
步骤二中所述配料需放入高强石墨模具中,再将所述高强石墨模具置于真空热压炉中,先抽真空至6.5Pa,再以7.5℃/分钟的升温速率升至1115℃,随后在保温状态下,以40MPa的压力进行压制,保温保压9小时,得到石墨烯增强钴基复合材料坯料。
步骤三中将所述坯料放入真空退火炉,在900℃条件下时效处理2小时,随炉冷却后取出,将所述坯料进行铣面和清洗。
实施例3
如图1所示,本发明所述的一种耐磨刀具用石墨烯增强钴基复合材料的制备方法,其步骤如下:
步骤一:称量预定比例的配料进行混合;
步骤二:将混合后的所述配料进行真空、热压和保温处理得到坯料;
步骤三:将所述坯料进行时效处理、铣面和清洗。
步骤一中所述配料为高纯电解钴片、石墨烯、钨、铬、硅、锰、铁,将所述配料放入行星球磨机中,通入液氮进行球磨混合,所述石墨烯的含量为以铝基体的质量为基数的1.5wt%;所述钨、铬、硅、锰成分的含量,均以所述铝基体的质量为基数,分别为:钨为6.0wt%,铬为32.0wt%,硅为1.1wt%,锰为0.8wt%。
步骤二中所述配料需放入高强石墨模具中,再将所述高强石墨模具置于真空热压炉中,先抽真空至3Pa,再以10℃/分钟的升温速率升至1180℃,随后在保温状态下,以40MPa的压力进行压制,保温保压12小时,得到石墨烯增强钴基复合材料坯料。
步骤三中将所述坯料放入真空退火炉,在900℃条件下时效处理2小时,随炉冷却后取出,将所述坯料进行铣面和清洗。
上述虽然对本发明的具体实施例作了详细说明,但是本发明并不限于上述实施例,在本领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下做出各种变化,而不具备创造性劳动的修改或变形仍在本发明的保护范围以内。
Claims (4)
1.一种耐磨刀具用石墨烯增强钴基复合材料的制备方法,其步骤如下:
步骤一:称量预定比例的配料进行混合;
步骤二:将混合后的所述配料进行真空、热压和保温处理得到坯料;
步骤三:将所述坯料进行时效处理、铣面和清洗。
2.根据权利要求1所述的一种耐磨刀具用石墨烯增强钴基复合材料的制备方法,其特征在于:步骤一中所述配料为高纯电解钴片、石墨烯、钨、铬、硅、锰、铁,将所述配料放入行星球磨机中,通入液氮进行球磨混合,所述石墨烯的含量为以铝基体的质量为基数的1.0wt%~1.5wt%;所述钨、铬、硅、锰成分的含量,均以所述铝基体的质量为基数,分别为:钨为3.0~6.0wt%,铬为25.0~32.0wt%,硅为0.5~1.1wt%,锰为0.2~0.8wt%。
3.根据权利要求1所述的一种耐磨刀具用石墨烯增强钴基复合材料的制备方法,其特征在于:步骤二中所述配料需放入高强石墨模具中,再将所述高强石墨模具置于真空热压炉中,先抽真空至10-3Pa,再以5~10℃/分钟的升温速率升至1050℃~1180℃,随后在保温状态下,以40MPa的压力进行压制,保温保压6-12小时,得到石墨烯增强钴基复合材料坯料。
4.根据权利要求1所述的一种耐磨刀具用石墨烯增强钴基复合材料的制备方法,其特征在于:步骤三中将所述坯料放入真空退火炉,在900℃条件下时效处理2小时,随炉冷却后取出,将所述坯料进行铣面和清洗。
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