Microstructure and mechanical properties of plasma RE nitrocarburized layer of 17-4PH steel;

Effect of heat treatment on hysteresis property of 17-4PH steel

In order to improve the wear resistance and corrosion resistance of surface layer conventionally nitrided for 17-4PH steel, the pulse plasma nitrocarburizing was carried out at lower temperature with and without RE addition.

The rheological properties,mechanical properties,microstructure and anticorrosive properties of injection molded 17-4 PH stainless steel were investigated.

Effect of intermediate treatment on seawater corrosion resistance property of 17-4PH stainless steel;

The micro-structure of the treated layer of 17-4PH stainless steel(SS) by the QPQ(Quench-Polish-Quench) complex salt bath heat-treatment was investigated,using X-ray diffractometer(XRD) for mi-crostructure analysis and the scanning electronic microscopy(SEM) with EDS(energy dispersive spectrum) for the profile of carbon,nitrogen and oxygen of the treated layer.

The study results show that when 17-4PH stainless steel was subjected to the salt bathing nitriding,the main items in the nitrided layer are the expanded(nitride contended) martensite(α`),Fe2-3(N,C),CrN,Fe4N and Fe3O4.

Influence of glucosidorum tripterygii tororum on expression of interleukin-23,interleukin-17 and interleukin-12 in colonic tissues of mice with colitis;

Interleukin-17(IL-17),a cytokine produced by the Th17-cell subset,may promote the recruitment and activation of neutrophils in the airway by inducing the release of the chemokine CXCL8(IL-8) and is prominent in airway wall remodeling of chronic airway inflammatory disease.

Objective To observe the change of interleukin-17(IL-17)in peripheral blood and endothelial function by endothelin-1(ET-1)、nitric oxide(NO)of pulmonary hypertension(PH)associated with congenital heart disease(CHD),and collect the correlation factors of clinical datas,to discuss the role IL-17 in the development of CHD with PH.