New Environmentally Benign Heteropolymolybdate Conversion Coatings for Aluminum Alloys

EPA Contract Number: 68D98127
Title: New Environmentally Benign Heteropolymolybdate Conversion Coatings for Aluminum Alloys
Investigators: Minevski, Zoran
Small Business: Lynntech Inc.
EPA Contact: Richards, April
Phase: I
Project Period: September 1, 1998 through March 1, 1999
Project Amount: $70,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1998) RFA Text |  Recipients Lists
Research Category: Nanotechnology , SBIR - Pollution Prevention , Pollution Prevention/Sustainable Development , Small Business Innovation Research (SBIR)


Chemical conversion coatings to provide corrosion resistance to aluminum and aluminum alloys are based on the use of chromates. Because environmental regulations and standards for numerous materials and products throughout the industrial market are becoming more focused on environmental and human impact issues, chromate use has become a regulation target. Chromate is both toxic and carcinogenic under certain conditions; thus, its future, on an industry basis, is becoming more strictly regulated. Lynntech, Inc., has successfully completed preliminary tests on a new heteropolymolybdate-based conversion coating which has two highly important commercial potential features: (a) initial tests have shown corrosion resistance features equal to that of chromate, and (b) heteropolymolybdate formulations are environmentally benign and have a low potential for toxic impact. The key to this project is the use of heteropolymolybdates, where the primary effect of the hetero atom (Mn, V, Ce, Si) is an effective transformation of Mo(III) and Mo(IV) to stable Mo(V) and Mo(VI); therefore, enhancing the formation of conversion coatings on aluminum alloys. The results of the Phase I research project will provide corrosion protective conversion coating formulations for a range of aluminum alloys. Those coatings will be inexpensive and environmentally beneficial.

Publications and Presentations:

Publications have been submitted on this project: View all 1 publications for this project

Supplemental Keywords:

small business, SBIR, pollution prevention, engineering, chemistry, EPA., RFA, Scientific Discipline, Toxics, Air, Sustainable Industry/Business, National Recommended Water Quality, Chemical Engineering, Sustainable Environment, cleaner production/pollution prevention, Environmental Chemistry, HAPS, Chemistry, Technology for Sustainable Environment, Chemistry and Materials Science, 33/50, Engineering, Chemistry, & Physics, Environmental Engineering, heteropolymolybdate conversion coatings, chromium & chromium compounds, cleaner production, Chromium, clean technology, conversion coating, Chromium Compounds, alternative coatings, coatings, pollution prevention, heteropolymolybdate

Progress and Final Reports:

  • Final Report
  • SBIR Phase II:

    New Environmentally Benign Heteropolymolybdate Conversion Coatings for Aluminum Alloys  | Final Report