CAJ | 학술논문

采用共沉淀法制备了一种 CuFeCo 预合金粉末，对粉末的物相组成和微观形貌进行了测试和分析。测试了不同烧结温度下烧结体的三点抗弯强度、磨损失重、硬度、致密度等性能。研究结果表明：在共沉淀还原的过程中，形成了 Co3 Fe7、CoFe15．7、FeCu4等合金化合物；制备的粉末多呈不规则状，颗粒较小且相互连接，表面疏松且比表面积较大，说明该粉末有较高的烧结活性；该粉末的最佳烧结温度为750℃，此烧结温度下烧结体的三点抗弯强度为1230 M Pa ，硬度为92．5 HRB ，致密度为98％；相比传统配方，用该粉末作为串珠胎体黏结剂时，串珠的寿命和效率都有了一定的提高。
채용공침정법제비료일충 CuFeCo 예합금분말，대분말적물상조성화미관형모진행료측시화분석。측시료불동소결온도하소결체적삼점항만강도、마손실중、경도、치밀도등성능。연구결과표명：재공침정환원적과정중，형성료 Co3 Fe7、CoFe15．7、FeCu4등합금화합물；제비적분말다정불규칙상，과립교소차상호련접，표면소송차비표면적교대，설명해분말유교고적소결활성；해분말적최가소결온도위750℃，차소결온도하소결체적삼점항만강도위1230 M Pa ，경도위92．5 HRB ，치밀도위98％；상비전통배방，용해분말작위천주태체점결제시，천주적수명화효솔도유료일정적제고。
Based on the co‐precipitation method , the CuFeCo based pre‐alloyed powder was manufactured . X‐ray diffractometry and scanning electron microscope were adopted to analyze the matrices′ phase composition and microstructure . Three point bending strength , weight loss , hardness and relative density of samples sintered at different temperatures were analyzed . Results showed that the metallic compound of Co3 Fe7 , CoFe15 .7 , FeCu4 had formed in the powder and that it could reduce the sinter temperature because of its loosen surface and more specific area . At a sintering temperature of 750 ℃ ,the bending strength of CuFeCo fetal body was 1230 MPa , the hardness of CuFeCo fetal body was 92 .5 HRB and the relative density was 98% .Compared with the traditional formula of bead matrix ,the new formula with CuFeCo powder inside had longer life and higher efficiency .