Not that I could find. You might want to contact HP support to see if you can have yours replaced under warranty, if it's still under warranty, or purchase a keyboard replacement through them.
If you can disassemble it then pull the keyboard out. Every HP part has a sticker on it with an HP part number. Punch it into Google or Ebay and you'll likely find it.
Edit: Since it's more like a tablet you'll probably have to do the whole palmrest and keyboard assembly.