常州大学学报（自然科学版）2016，Vol.28Issue(4)：54-58,5.DOI:10.3969/j.issn.2095-0411.2016.04.010
45钢表面交流电场增强粉末法铝氮复合渗研究
Study on Alternating Current Field Enhanced Pack Aluminizing Plus Nitriding of 4 5 Carbon Steel Surface
摘要
Abstract
Alternating current field enhanced pack aluminizing plus nitriding (ACFEPAN)was carried out on 45 steel surface by applying ACF to the sample and treating agents with a pair of electrodes for overco-ming shortcomings of thin cases and long treating time in conventional pack aluminizing plus nitriding process.By investigating cases�structures,phases and hardness distributions of differently treated sam-ples,a preliminary study was made on characterizations of ACFEPAN on the surface of 45 steel.The re-sults show that the alternating current field (ACF)not only speed up aluminizing but also can avoid the formation of aluminium-rich phases during the alternating current field enhanced pack aluminizing.The a-luminium-rich phases formed by conventional pack aluminizing prevent the diffusion of N into the alumini-zing case during the later nitriding.By applying ACF to nitriding,the infiltration of nitrogen into the alu-minizing case is promoted,and N reacts with the aluminizing case to form AlN and Fe3 N.A case with an effective thickness of more than 150μm can be obtained by alternating current field enhanced 4h pack alu-minizing plus 4h nitriding.关键词
粉末法铝氮复合渗/交流电场/显微组织/硬度/45 钢Key words
pack aluminizing plus nitriding/alternating current field/microstructure/hardness/45carbon steel分类
矿业与冶金引用本文复制引用
张格,谢飞,潘建伟..45钢表面交流电场增强粉末法铝氮复合渗研究[J].常州大学学报（自然科学版）,2016,28(4):54-58,5.基金项目
国家自然科学基金(51171032)。 （51171032）
