Are there enough cards out there to support a mono white artifact deck?
Absolutely! Having blue is probably better, but mono white could work.
I have a mono white {stoneforge mystic} deck that runs {batterskull}, {umezwas jitte}, all the swords, some other fun equipment, and {puresteel paladins} to draw tons of cards.
I equip {kor duelists} and {auriok edgerights} for nasty double strike effects.
I guess it would be considered Legacy Casual. Competitive but not tournament competitive.