De volgende tabel toont de eigenschappen van de verschillende alternatieven in vergelijking met hardchroom (CrVI gebaseerd) als referentie. Deze tabel kan gebruikt worden om een alternatieve deklaag of behandeling te selecteren. Een hoge slijtageweerstand is vaak de belangrijkste eigenschap van hardchroom in een bepaalde toepassing, maar daarnaast zijn er nog vele andere eigenschappen van hardchroom die een rol spelen: corrosieweerstand, impactweerstand, oppervlaktekwaliteit en -afwerking, dikte van de laag, mogelijkheid tot coaten van substraten met zeer uiteenlopende afmetingen en vormen, etc.
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Characteristic
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Electrolytic plating
|
Electroless plating
|
Vacuum deposition
|
Thermochemical
|
Thermal spraying
|
Hardfacing
|
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Cr III
|
Ni
|
Ni alloys
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NiP
|
NiB
|
PVD
|
CVD
|
QPQ
|
HVOF
|
PTA
|
|
Thickness (µm)
|
0,5-100
|
10 - 50
|
10 - 50
|
10 - 50
|
10 - 50
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1 - 10
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5 - 50
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/
|
100 - 2000
|
500 - 10 000
|
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Wear resistance
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Corrosion resistance
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Impact resistance
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Surface quality
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Complex geometry
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Temperature sensitive alloys
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Large parts
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Small parts
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Anti-stick
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Repair
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Productivity
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Environment
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Characteristic
|
Electrolytic plating
|
Electroless plating
|
Vacuum deposition
|
Thermochemical
|
Thermal spraying
|
Hardfacing
|
|
Cr III
|
Ni
|
Ni alloys
|
NiP
|
NiB
|
PVD
|
CVD
|
QPQ
|
HVOF
|
PTA
|
|
Thickness (µm)
|
0,5-100
|
10 - 50
|
10 - 50
|
10 - 50
|
10 - 50
|
1 - 10
|
5 - 50
|
/
|
100 - 2000
|
500 - 10 000
|
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Wear resistance
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Corrosion resistance
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Impact resistance
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Surface quality
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Complex geometry
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Temperature sensitive alloys
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Large parts
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Small parts
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Anti-stick
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Repair
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Productivity
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Environment
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Caractéristiques
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Dépôt électrolytique
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Dépôt chimique
|
Dépôts sous vide
|
Thermo-chimique
|
Pulvérisation thermique
|
Acier dur
|
|
CrIII
|
Ni
|
Ni alloys
|
Ni
|
NiB
|
PVD
|
CVD
|
QPQ
|
HVOF
|
PTA
|
|
Epaisseur (µm)
|
0,5 -100
|
10 - 50
|
10 - 50
|
10 - 50
|
10 - 50
|
1 10
|
5 - 50
|
/
|
100 - 2000
|
500 - 10000
|
|
Résistance à l'usure
|
=
|
<
|
=
|
<
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=
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>
|
>
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=
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>
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>
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|
Résistance à la corrosion
|
<
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>
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>
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>
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>
|
<
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=
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=
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=
|
>
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Résistance aux chocs
|
<
|
=
|
=
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<
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<
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=
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>
|
>
|
<
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>
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Qualité de la surface
|
=
|
>
|
=
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=
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=
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>
|
<
|
>
|
<
|
<
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Géométrie complexe
|
=
|
=
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=
|
>
|
>
|
<
|
>
|
>
|
<
|
<
|
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Alliages sensibles à la température
|
=
|
=
|
=
|
<
|
<
|
<
|
<
|
<
|
<
|
<
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Grandes pièces
|
=
|
=
|
=
|
<
|
<
|
<
|
<
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=
|
=
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=
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Petites pièces
|
=
|
=
|
=
|
>
|
>
|
<
|
<
|
=
|
<
|
<
|
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Anti-adhérent
|
=
|
<
|
<
|
<
|
<
|
=
|
=
|
>
|
=
|
<
|
|
Réparation
|
<
|
<
|
<
|
<
|
<
|
<
|
<
|
<
|
>
|
>
|
|
Productivité
|
=
|
=
|
=
|
<
|
<
|
<
|
<
|
<
|
<
|
<
|
|
Environnement
|
=
|
=
|
=
|
=
|
=
|
>
|
<
|
<
|
>
|
>
|
|
Characteristic
|
Electrolytic plating
|
Electroless plating
|
Vacuum deposition
|
Thermochemical
|
Thermal spraying
|
Hardfacing
|
|
Cr III
|
Ni
|
Ni alloys
|
NiP
|
NiB
|
PVD
|
CVD
|
QPQ
|
HVOF
|
PTA
|
|
Thickness (µm)
|
0,5-100
|
10 - 50
|
10 - 50
|
10 - 50
|
10 - 50
|
1 - 10
|
5 - 50
|
/
|
100 - 2000
|
500 - 10 000
|
|
Wear resistance
|
|
|
|
|
|
|
|
|
|
|
|
Corrosion resistance
|
|
|
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|
|
|
|
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|
Impact resistance
|
|
|
|
|
|
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Surface quality
|
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|
Complex geometry
|
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|
Temperature sensitive alloys
|
|
|
|
|
|
|
|
|
|
|
|
Large parts
|
|
|
|
|
|
|
|
|
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|
Small parts
|
|
|
|
|
|
|
|
|
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Anti-stick
|
|
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|
|
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|
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Repair
|
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Productivity
|
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|
Environment
|
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Caractéristiques
|
Dépôt électrolytique
|
Dépôt chimique
|
Dépôts sous vide
|
Thermo-chimique
|
Pulvérisation thermique
|
Acier dur
|
|
CrIII
|
Ni
|
Ni alloys
|
Ni
|
NiB
|
PVD
|
CVD
|
QPQ
|
HVOF
|
PTA
|
|
Epaisseur (µm)
|
0,5 -100
|
10 - 50
|
10 - 50
|
10 - 50
|
10 - 50
|
1 10
|
5 - 50
|
/
|
100 - 2000
|
500 - 10000
|
|
Résistance à l'usure
|
=
|
<
|
=
|
<
|
=
|
>
|
>
|
=
|
>
|
>
|
|
Résistance à la corrosion
|
<
|
>
|
>
|
>
|
>
|
<
|
=
|
=
|
=
|
>
|
|
Résistance aux chocs
|
<
|
=
|
=
|
<
|
<
|
=
|
>
|
>
|
<
|
>
|
|
Qualité de la surface
|
=
|
>
|
=
|
=
|
=
|
>
|
<
|
>
|
<
|
<
|
|
Géométrie complexe
|
=
|
=
|
=
|
>
|
>
|
<
|
>
|
>
|
<
|
<
|
|
Alliages sensibles à la température
|
=
|
=
|
=
|
<
|
<
|
<
|
<
|
<
|
<
|
<
|
|
Grandes pièces
|
=
|
=
|
=
|
<
|
<
|
<
|
<
|
=
|
=
|
=
|
|
Petites pièces
|
=
|
=
|
=
|
>
|
>
|
<
|
<
|
=
|
<
|
<
|
|
Anti-adhérent
|
=
|
<
|
<
|
<
|
<
|
=
|
=
|
>
|
=
|
<
|
|
Réparation
|
<
|
<
|
<
|
<
|
<
|
<
|
<
|
<
|
>
|
>
|
|
Productivité
|
=
|
=
|
=
|
<
|
<
|
<
|
<
|
<
|
<
|
<
|
|
Environnement
|
=
|
=
|
=
|
=
|
=
|
>
|
<
|
<
|
>
|
>
|