Sliding bearing and its production method

A sliding bearing, which comprises a lining and a bismuth or bismuth-alloy overlay formed on the lining, wherein the relative ratio of the X-ray diffraction intensity I[hkl] of the bismuth or bismuth-alloy overlay defined below satisfies the following conditions (a) and (b):

• (a) the relative ratio of the X-ray diffraction intensity I[hkl] of planes other than the {012} planes is from 0.2 to 5 times as high as the ratio of the X-ray diffraction intensity I[012], namely, 0.2I[012]≦I[hkl]≦5I[012]
• (b) the relative ratio of the X-ray diffraction intensity I[hkl] of three or more planes other than {012} planes ranges from 0.5 to 2 times as high as the ratio of the X-ray diffraction intensity I[012], namely, 0.5I[012]≦I[hkl]≦2I[012], where;
• the {hkl} planes of bismuth crystals of standard powder samples having random orientation indicates the X-ray diffration intensity Rp (hkl);
• the {hkl} planes of bismuth crystals of said bismuth or bismuth-alloy overlay layer indicates the X-ray diffraction intensity RO/L (hkl);
• the ratio of both intensities is expressed by K (hkl)=RO/L (hkl)/Rp (hkl);
• the ratio of K (012) and the K (hkl) is expressed by I[hkl]=K(hkl)/K(012).