Nowadays, there is a lot of environmental pollution due to the wastes generated by the industries. In particular, the waste generated by leather industries produces more environmental pollution. Chrome containing leather waste (CCLW) also causes a lot of environmental pollution. In this study, an attempt has been made to use CCLW as reinforcement with aluminium. Collagen powder was extracted from CCLW. Extracted collagen powder was used to develop aluminium based composite after ball-milling with alumina particles. The parameters of the friction stir process (FSP) are optimized by the Box-Behnken Design. The optimum combination of FSP parameters was found to be the number of tool pass of 1, tool rotational speed of 965.20 rpm and transverse speed of 23.69 mm/min. Tensile strength and hardness were found to be 162.89 MPa and 53.24 BHN, respectively at an optimum combination of FSP parameters. Uniform distribution of reinforcement particles has been also observed for the composite developed at an optimum combination of FSP parameters. Results showed that tensile strength and hardness of composite were enhanced by about 20.65 % and 23.81 % respectively with respect to the base material.

如今，由于工业产生的废物而造成许多环境污染。皮革工业产生的废物尤其会造成更多的环境污染。含铬的皮革废料（CCLW）也造成许多环境污染。在这项研究中，已经尝试使用CCLW作为铝的增强材料。从CCLW提取胶原蛋白粉末。用氧化铝颗粒球磨后，提取的胶原蛋白粉末用于开发铝基复合材料。搅拌摩擦过程（FSP）的参数通过Box-Behnken设计进行了优化。发现FSP参数的最佳组合是工具通过次数为1，工具旋转速度为965.20 rpm，横向速度为23.69 mm / min。发现拉伸强度和硬度为162.89 MPa和53.24 BHN，FSP参数的最佳组合。对于在FSP参数的最佳组合下开发的复合材料，还观察到了增强颗粒的均匀分布。结果表明，相对于基材，复合材料的拉伸强度和硬度分别提高了约20.65％和23.81％。