The demand for improvement of lifetime and biocompatibility medical implants is ever growing. materials used in this challenging application must display enhanced tribological properties, reduced metal ion release long-term clinical performance. Surface modification techniques such as nitriding, can significantly improve the in-service behaviour grade alloys implants. This communication reports...

Aim to greatly enhance the magnetic performance, room temperature nitriding experiments were implemented on existing linear Fe clusters. Firstly, dissociation of CH3OH adsorption process was deducted in detail, which laid a good foundation for better use surface quasi-potential. Further solve coming problems like weak linearity and low effect, atomic layers deposition are confirmed as key NH3 (...

The combined treatment of pressurized gas nitriding and cold rolling is proposed as a new approach to rapid preparation of a strong and tough nitrided layer for steel 38CrMoAlA. The microstructural characteristics and properties of the modified surface layer in comparison with those of the conventionally gas nitrided sample have systematically been evaluated. The results show that the hardness ...

Fine-grained austenitic stainless steels (FGSS) were plasma nitrided below 700 K to describe their microstructure evolution during the nitrogen supersaturation process and investigate post-stressing effect on mechanical properties of FGSS. Normal- fine-grained AISI304 plates at 623 673 grain size as well nitriding process. AISI316 (FGSS316) wires demonstrate that outer surfaces uniformly have s...

Abstract The load carrying capacity of gears can be significantly increased by nitriding. However, the required nitriding hardening depth depends on stress level and gear size. In order to achive a high fatigue resistance durability nitrided an adequate is necessary. industrial practice, (NHD) about 0.6 mm currently regarded as upper limit that reached within reasonable time cost. This also lim...

This study investigated the hardness and wear on DIN 1.2367 hot work tool steel after applying plasma gas nitriding processes under different conditions. The effect of process temperature N2:H2 mixture ratio was examined in first group specimens, whereas impact nitrogen potential retention time second specimens. In applied to group, increase N2 significantly increased properties material. addit...