Mohammad Sharear Kabir

12 Questions 10 Answers 0 Followers

Questions related from Mohammad Sharear Kabir

What is the best rust remover solution?

For failure analysis, sometimes parts received contains fully rusted fracture surface and surrounding areas. Is there an acid solution out there for soaking the parts or spraying solution to the...

23 September 2024 8,238 8 View

Is there a good macro photography kit for on-site metallurgical investigation?

I am looking to purchase a photography kit for onsite metallurgical investigations, such as capturing photos of worn areas, hot tears, cold tears etc. Could anyone suggest me a good...

23 July 2024 4,025 2 View

Is there a relationship between Max principal tensile stress, hardness and mean contact pressure?

I am trying to determine the maximum true contact pressure [Cylinder on flat body model]. I only have the Vickers hardness value (500 HV for 10 kgf load). Is there a way to correlate them?

04 October 2021 5,093 2 View

How does micro-segregation in a heat treated (homogenized) sample look like?

I am new in the field of heat treatment and foundry. I am working on heat treating Cr-Mo steels (C=0.78%) to obtain a homogeneous fully eutectoid (100% pearlitic) steel. The austenitisation...

05 May 2020 5,210 0 View

I wanted to know if there was a relation for assessing the wear of grinding media in semi-autogenous mills ?

I am looking at the wear behaviour of grinding media in semi-autogenous (SAG) mills and any mathematical relation to calculate the wear relation interms of grinding media impact wear, liner wear!!...

08 August 2019 7,095 0 View

What can be the reason for presence of Oxygen content in coatings ?

I have prepared CrAlN coatings. During deposition, every careful steps were taken to avoid any oxygen leakage or contamination inside the chamber. but still after XPS investigation the oxygen...

01 September 2016 9,630 5 View

Is there any possibility that wear rate of CrAlN coatings decrease with increase in sliding distance/load/ sliding velocity ?

CrAlN (different Al composition) coatings were subjected to wear (room temperature) at different parameters. For a particular composition, say 17% Al, the sample was subjected to wear tests by...

02 August 2016 6,551 5 View

Which is the best simulation tool for nanoindentation and/or Scratch test ?

I am a novice at simulation but I am very eager to learn it. I am dealing with nanoindentation and scratch testing of nanocomposite thin films. I was wondering If simulating nanoindentation would...

06 May 2016 3,373 5 View

Is high hardness and high H/E and H3/E2 associated with brittleness in practice ?

High hardness materials typically have high H/E ratios (H-hardness and E-modulus). High H/E is usually beneficial for wear resistance due to higher elastic strain-to-fracture. Theoretically high...

28 April 2016 4,921 11 View

What is the most accurate way of determining grain size of columnar grains from Bright field TEM micrographs?

A bright field image of the sample is attached. I wanted to know an accurate way of determining the average grain size of columnar grains in the structure. The Scherrer formula yields a grain size...

01 April 2016 5,307 3 View

Is there any software (free) or any efficient way of constructing ternary phase diagrams with Zn-Al-Ni alloys?

Zn based alloys used as high temperature solders

08 April 2015 9,059 8 View

At present I am working on hard nitride coatings particularly CrN thin films. Can anyone help me on the Cr-N phase diagram with details?

CrN advanced thin film coatings are used in medical applications. Cr-N binary system needs explanantion.

27 March 2015 1,485 6 View