Electronic device, rotating shaft, laminated composite material, and method for manufacturing laminated composite material

An electronic device, comprising a rotating shaft comprising a fixing member and a rotating member rotatably connected to the fixing member, wherein either of the rotating member and the fixing member or both the rotating member and the fixing member are made of a laminated composite material, wherein the laminated composite material comprises:

• at least three material layers, wherein
• the at least three material layers comprise a first material layer, and a second material layer adjacent to the first material layer, and a third material layer adjacent to the second material layer on a side opposite to the first material layer;
• the first material layer comprises a first metal material, wherein yield strength of the first metal material is greater than 200 Mpa, and an elongation rate of the first metal material is greater than 6%;
• and
• the second material layer comprises a first composite material, wherein the first composite material comprises a second metal material and diamond particles,
• wherein the first metal material comprises one of stainless steel and alloy steel, the second metal material comprises one of stainless steel and steel, and the third material layer is made of diamond.

A method for manufacturing a laminated composite material, comprising:

• providing at least a first metal material, a first composite material, and a diamond material, wherein
• a yield strength of the first metal material is greater than 200 Mpa, and an elongation rate of the first metal material is greater than 6%, and wherein the first composite material comprises a second metal material and diamond particles;
• and
• forming a first material layer comprising the first metal material, a second material layer comprising the first composite material, and a third material layer comprising the diamond material to form the laminated composite material, wherein the second material layer is adjacent to the first material layer, and the third material layer is adjacent to the second material layer on a side opposite to the first material layer,
• wherein the first metal material comprises one of stainless steel and alloy steel, the second metal material comprises one of stainless steel and alloy steel, and the diamond material is made of diamond.