SEM image (polished cross-section) of 1-µm tantalum diffusion layer applied over a conventional chromium coating. Tantalum diffuses into and fills microcracks, which exist in all chromium coatings, thereby increasing corrosion resistance and lifetime (top: 1000×; bottom: 4000×)

SEM image (polished cross-section) of 1-µm tantalum diffusion layer applied over a conventional chromium coating. Tantalum diffuses into and fills microcracks, which exist in all chromium coatings, thereby increasing corrosion resistance and lifetime (top: 1000×; bottom: 4000×)

SEM image (polished cross-section) of 1-µm tantalum diffusion layer applied over a conventional chromium coating. Tantalum diffuses into and fills microcracks, which exist in all chromium coatings, thereby increasing corrosion resistance and lifetime (top: 1000×; bottom: 4000×)
SEM image (polished cross-section) of 1-µm tantalum diffusion layer applied over a conventional chromium coating. Tantalum diffuses into and fills microcracks, which exist in all chromium coatings, thereby increasing corrosion resistance and lifetime (top: 1000×; bottom: 4000×)