Screening the Main Factors Affecting the Wear of the Scraper Conveyor Chute Using the Plackett–Burman Method

Figure 9

Wear surface morphology of the martensitic test piece under unworn condition (a)(b), under PBD-2 condition (c) (d), and under PBD-8 (e) (f) (g) (h).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)