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来源：百度知道 编辑：UC知道 时间：2024/06/23 15:34:54
实验结果表明，灰口铸铁经多元共渗工艺处理后，表面一般由白亮的化合物层和过渡区组成。多元共渗处理温度越高，渗层硬度越低，处理温度越低，渗层硬度越高，渗层的厚度主要受处理温度高低和处理时间长短影响。处理温度越高，时间越长，渗层越厚。对原材料进行氧化处理时，使用1号、2号氧化液很容易得到表面均匀、色泽光亮的黑色氧化层。对多元共渗处理后的样品进行氧化时，使用1号、2号氧化液只能对表面为蓝色的多元共渗样进行氧化得到颜色较淡的氧化层，而3号氧化液对于多元共渗红色和蓝色样进行氧化时均能得到表面均匀且致密的深黑色氧化层。温度对于影响钝化处理后的材料表面颜色较大，在400℃淬钝化液比在200℃时淬钝化液所得到的颜色要深一些。加热的先后对于表面颜色的影响不大，不论是淬前加热还是淬后加热，基本都能得到较黑的颜色。
对多元共渗样进行钝化和氧化处理后能得到表面颜色为黑色的氧化膜，在随后的腐蚀试验中，经钝化和氧化处理的样品抗腐蚀性能与仅进行多元共渗处理的样品抗蚀性相比，有所提高。
How does passing off others' work as one's own interfere with the student's ability to learn, improve, and get a good job?
Are cultural differences between how the Chinese and other cultures view the submitting of a written paper on this a gray iron complex process multiple, complex and diverse process of materials and properties of the experiment, multiple composite process for Infiltration by the Multi-sample handling after a passive or oxidation process.
Experimental results show that the multi-gray iron permeation of treatment, usually white surface layer of the compound and composition of the transitional zone. Multi-infiltration handling the higher the temperature, hardness, the lower layer, the lower the temperature, the higher the hardness layer, the layer thickness of the major high and low temperature and the length of processing time of impact. The higher the temperature, the longer the time, the thick layer. The processing of raw materials, the