Relative etch rates of nitric acid on metals and oxides

I am trying to either find or calculate the etch rate of nitric acid ($\ce{HNO3}$) for various different metals and oxides. The ones I am interested in are titanium ($\ce{Ti}$), zirconium ($\ce{Zr}$), and lead ($\ce{Pb}$); and their oxides $\ce{TiO2}$, $\ce{ZrO2}$, and $\ce{PbO/PbO2}$.


I have checked lots of sources, including the *CRC Handbook of Metal Etchants*, and have not been able to find anything that describes comparative etch rates for those six materials. Where can I find this information or, alternatively, how can I estimate these quantitites?


