Design World

  • Home
  • Technologies
    • ELECTRONICS • ELECTRICAL
    • Fastening • joining
    • FLUID POWER
    • LINEAR MOTION
    • MOTION CONTROL
    • SENSORS
    • TEST & MEASUREMENT
    • Factory automation
    • Warehouse automation
    • DIGITAL TRANSFORMATION
  • Learn
    • Tech Toolboxes
    • Learning center
    • eBooks • Tech Tips
    • Podcasts
    • Videos
    • Webinars • general engineering
    • Webinars • Automated warehousing
    • Voices
  • LEAP Awards
  • 2025 Leadership
    • 2024 Winners
    • 2023 Winners
    • 2022 Winners
    • 2021 Winners
  • Design Guides
  • Resources
    • Subscribe
    • 3D Cad Models
      • PARTsolutions
      • TraceParts
    • Digital Issues
      • Design World
      • EE World
    • Educational Assets
    • Engineering diversity
    • Trends
  • Supplier Listings
  • Advertise
  • Subscribe

A Closer Look at Coatings

By Design World Staff | August 6, 2008

The material of a component chosen for a machine build can play a crucial role in the equipment‚’s performance and life expectancy.  Popular materials such as 52100 Bearing Steel and 440C Stainless Steel bring their own advantages and disadvantages to a machine.  Even so, they often need a coating so that they can withstand the elements of harsh environments.

Various coating methods are available to meet application requirements and satisfy design functions. To examine various coating methods, engineers at Misumi conducted corrosion resistance tests. The test samples were flanged type linear bushings. The test method corresponded to cyclic test pursuant to JIS H 8502 (complex corrosion test method) with the following conditions:

1 Salt water spray test (5% NaCl, 35‚º C)
2 hours
2 Dry (60‚º C)
3 Wet (85% rel. H, 50‚º C)

aug dn2 one.jpg
The use of coatings on components made of steel will often impart longer wear life as well as other properties. This chart shows how well several popular coatings resist corrosion on linear bushings made of two types of steel.

The appearance of the test samples were then compared with the original condition after 72 hours and 168 hours elasped.

Low Temperature Black Chrome plating (LTBC) uses an electrochemical reaction below 0‚°C.  Through the plating process, an alloy-like diffusion layer forms at the outer margin of the part, allowing chrome particles to completely integrate the base material and create an inseparable bond.  Thus, the plating can neither be peeled nor flaked off.  The surface consists of a uniform film creating a resistant rust protection layer.  For example, LTBC-plated shafts and components
provide service life exceeding 10 years and, in some cases up to 20 years and beyond.  Components with this plating have fracture-resistant surfaces with a high level of alternate-bending strength.  The tolerances of the components remain practically unaffected.  These components can be used in applications specifying corrosion resistance or minimal light reflection making LTBC suitable for use in optical applications requiring low light reflection.

High Carbon chromium 52100 Bearing Steel features a rigid construction but is susceptible to corrosion in harsh environments.

Stainless steel will rust, but it rusts at a slow rate, which creates the perception that it does not rust.  When exposed to a harsh environment, 440C Stainless Steel exhibits other corrosion properties.  Furthermore, it has a martensitic microstructure that exhibits magnetic properties and offers corrosion resistance that is lower than the common austenitic grades. This material is also fit for hardening.

Electroless Nickel Plating (EN) is an anti-corrosion coating process used for steel, stainless steel and copper materials.  It offers high corrosion and abrasion resistance and 500 Vickers hardness (HV).  Furthermore, it will give conductivity to a non-metal surface.  The process involves the chemical reduction of nickel ions and the deposit of nickel metal.  Good for harsh environments, EN is suitable for corrosion resistance in adverse conditions.

Misumi USA Inc.

www.misumiusa.com

::Design World::


You Might Also Like


Filed Under: Materials • advanced

 

LEARNING CENTER

Design World Learning Center
“dw
EXPAND YOUR KNOWLEDGE AND STAY CONNECTED
Get the latest info on technologies, tools and strategies for Design Engineering Professionals.
Motor University

Design World Digital Edition

cover

Browse the most current issue of Design World and back issues in an easy to use high quality format. Clip, share and download with the leading design engineering magazine today.

EDABoard the Forum for Electronics

Top global problem solving EE forum covering Microcontrollers, DSP, Networking, Analog and Digital Design, RF, Power Electronics, PCB Routing and much more

EDABoard: Forum for electronics

Sponsored Content

  • Sustainability, Innovation and Safety, Central to Our Approach
  • Why off-highway is the sweet spot for AC electrification technology
  • Looking to 2025: Past Success Guides Future Achievements
  • North American Companies Seek Stronger Ties with Italian OEMs
  • Adapt and Evolve
  • Sustainable Practices for a Sustainable World
View More >>
Engineering Exchange

The Engineering Exchange is a global educational networking community for engineers.

Connect, share, and learn today »

Design World
  • About us
  • Contact
  • Manage your Design World Subscription
  • Subscribe
  • Design World Digital Network
  • Control Engineering
  • Consulting-Specifying Engineer
  • Plant Engineering
  • Engineering White Papers
  • Leap Awards

Copyright © 2025 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Design World

  • Home
  • Technologies
    • ELECTRONICS • ELECTRICAL
    • Fastening • joining
    • FLUID POWER
    • LINEAR MOTION
    • MOTION CONTROL
    • SENSORS
    • TEST & MEASUREMENT
    • Factory automation
    • Warehouse automation
    • DIGITAL TRANSFORMATION
  • Learn
    • Tech Toolboxes
    • Learning center
    • eBooks • Tech Tips
    • Podcasts
    • Videos
    • Webinars • general engineering
    • Webinars • Automated warehousing
    • Voices
  • LEAP Awards
  • 2025 Leadership
    • 2024 Winners
    • 2023 Winners
    • 2022 Winners
    • 2021 Winners
  • Design Guides
  • Resources
    • Subscribe
    • 3D Cad Models
      • PARTsolutions
      • TraceParts
    • Digital Issues
      • Design World
      • EE World
    • Educational Assets
    • Engineering diversity
    • Trends
  • Supplier Listings
  • Advertise
  • Subscribe
We use cookies to personalize content and ads, to provide social media features, and to analyze our traffic. We share information about your use of our site with our social media, advertising, and analytics partners who may combine it with other information you’ve provided to them or that they’ve collected from your use of their services. You consent to our cookies if you continue to use this website.OkNoRead more