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采用自制的磷酸铝粘结剂和一定比例的陶瓷骨料在1Cr18Ni9上用料浆法制备氧化铝基陶瓷涂层。试验结果表明:涂层较致密,涂层与基体结合强度较好;涂层可提高1Cr18Ni9钢在碱和盐溶液中的抗侵蚀能力。 相似文献
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Nano-composite ceramic coating was fabricated on Q235 steel through thermo chemical reaction method. Structure of the coating was analyzed and the properties were tested. The results show that a few of new ceramic phases, such as MgAI2O4, ZnAI2O4, AI2SiO5, Ni3Fe and Fe3AI, are formed on the coating during the process of solidifying at 600 ℃. The ceramic coating is dense and the high bonding strength is obtained. The average bonding strength between the coating and matrix could be 14.22 MPa. The acid resistance of the coating increase by 8.8 times, the alkali resistance by 4.1 times, the salt resistance bv 10.3 times, and the wear resistance bv 2.39 times. 相似文献
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改革工程材料与成型工艺课程教学培养应用创新型人才 总被引:1,自引:0,他引:1
根据学校的人才培养目标(培养应用创新型人才),对工程材料与成型工艺课程进行定位.分析了课程现状,实施“强化认识,改革教学方法,突出实际应用和培养学生的创新能力”的教学改革,为培养更多的应用创新型人才打下良好的基础. 相似文献
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在精密卧式磨床M7132A上对42CrMo钢进行磨削淬火试验,研究磨削淬火强化层的组织形貌、显微硬度、强化层厚度及耐磨性。结果表明:42CrMo钢进行磨削淬火,强化层主要是由板条状马氏体组成,显微硬度达到771.8HV,与基体相比提高3倍以上;强化层厚度是以最小值t1为有效使用值;与调质态基体相比,磨削淬火强化层的耐磨性提高2~9倍。 相似文献