A sulfur free and chromium free catalyst for high temperature water gas shift reaction, with γ Fe 2O 3 as the high activity crystalline phase, was prepared by liquor synthesis technology and was characterized by X ray diffraction and Mssbouer spectroscopy.

Research & Performance Evaluation of Low Bulk Density Chromium-free Fe-series CO High Temperature Shift Catalyst;

Study on pretreatments for chromium-free chemical conversion of AZ91D magnesium alloy;

SIMOXIDE chromium-free chemical conversion process for magnesium alloys;

A conversion coating formed on magnesium alloy AM60 with a chromate-free bath mainly composed of silicate and tungstate is studied.

The aluminium chromate-free phosphating has been used abroad, but it is used lessly in domestic and the rel.

Study on Non-chromate Dacromet Technology for Magnesium Alloy;

The structure of Dacromet coating is introduced,and the development & applications,anticorrosion mechanism,features in performance and environmental benefits of the non-chromate Dacromet technology are described in detail.

Black conversion film with non-chromate was obtained on a cast aluminum alloy by chemical methods,and the anticorrosion properties of the film were evaluated by means of dropping test.

Some suggestions on the research of non-chromium conversion coating technology;